Quote Originally Posted by ras351
Firstly the developer is basically a normal B&W developer with a small amount of thiosulphate added to remove the masking layer.
Given what the process is, I'm not sure I understand the need to remove a masking layer in developing. Won't that layer (presumably a colloidal silver yellow filter layer like the ones found in C-41 and E-6 materials) be removed in the bleaching and fixing steps, just like the developed silver image?